[...]Police Director Toney Armstrong said Saturday that the shooting occurred as officers were executing a search warrant after having been contacted by the Memphis Animal Shelter earlier in the week. The department's TACT unit was used because the man was known to carry a gun and had exhibited threatening behavior toward MAS employees.

After entering the home around 6:20 p.m. Friday, officers encountered the man, who pointed a loaded handgun at them. A TACT officer then shot the suspect, Armstrong said, adding that he believes the man suffered from a mental illness.

"It's certainly disturbing," Armstrong said. "Most of the neighbors were saddened, but are now relieved that they no longer have to live in that situation. I can't begin to imagine being a resident of that neighborhood."